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x86, memory hotplug: remove wrong -1 in calling init_memory_mapping()

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Impact: fix crash with memory hotplug

Shuahua Li found:

| I just did some experiments on a desktop for memory hotplug and this bug
| triggered a crash in my test.
|
| Yinghai's suggestion also fixed the bug.

We don't need to round it, just remove that extra -1

Signed-off-by: Yinghai <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Shaohua Li 2008-10-27 13:03:18 -07:00 committed by Ingo Molnar
parent 3afa39493d
commit 60817c9b31
1 changed files with 1 additions and 1 deletions
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arch/x86/mm/init_64.c
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@ -837,7 +837,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
last_mapped_pfn = init_memory_mapping(start, start + size-1);
last_mapped_pfn = init_memory_mapping(start, start + size);
if (last_mapped_pfn > max_pfn_mapped)
max_pfn_mapped = last_mapped_pfn;